ABSTRACT:

Anonymizing networks like Tor permit users to access Internet services privately by employing a series of routers to hide the shopper's IP address from the server. The success of such networks, but, has been limited by users using this anonymity for abusive purposes like defacing widespread Web sites. Web website directors routinely rely on IP-address blocking for disabling access to misbehaving users, however blocking IP addresses is not practical if the abuser routes through an anonymizing network. As a result, directors block all known exit nodes of anonymizing networks, denying anonymous access to misbehaving and behaving users alike. To address this problem, we have a tendency to present Nymble, a system in which servers will “blacklist” misbehaving users, thereby blocking users without compromising their anonymity. Our system is therefore agnostic to completely different servers' definitions of misbehavior-servers can blacklist users for no matter reason, and the privacy of blacklisted users is maintained.